Excavating machinery



Oct. 11, 1932. LJUNGKULL 1,881,748

EXCAVATING MACHINERY Filed Sept. 18, 1929 2 Sheets-Sheet l INVENTOR.Rolf Ljung/(u ll ATTORNEY.

Oct 11, 1932. R LJUNGKULL 1,881,748

EXCAVATING MACHINERY Filed Sept. 18. 1929 2 Sheets-Sheet 2 z 9 Z5 Z2INVENTOR. Rolf Ljung/full ATTORNEYS.

Patented ()ct. 11,1932

' 'fUNITED STATES ROLE LJUNGKULL, .OF WAUWATOSA, WISCONSIN, ASSIGNOR TOHARNISCHFEGER COR- fan . from each PATENT OFFICE I PORATION, OFMILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN EXCAVATING MACHINERYApplication filed September 18, 1929. Serial No. 393,562.

' This invention relates to excavating machinery'such as power shovels,hoes, draglines, clam shells, and the like; In excavating machinery ofthis kind designed to handle a three cubic yard shovel dipper or athreeand a half cubic yard drag-line bucket or larger or smallerbucketsdepending upon the length of the boom required, the machine, as awholeas Well as its component parts, is of such unusually large size asto present a serious and difiicult problem in connection with theshipping of the machine from the place of its manufacture to the placeof its use or in the shipping of the machine from one placeof use toanother. In fact, heretofore, it has been necessary to ship such amachine disassembled and then set it up or assemble it at the place ofuse. It is easy to appreciate that these practically complete assemblyand dis'assenibly operations which are incident to each shipping resultin considerable'expense as well as the expenditure of a great dealoflabor and the loss of time.

The present invention proposes such a novel construction andorganization of the machine and especially of its main frame, itstraction devices, and of the drive for the traction devices that thetraction devices at both sides of the machine may be easily rethemachine and all of the parts carried thereby except the boom to beshipped on a flat car. Booms in this typeof-machine are already easilyremoved and with the present invention the boom and the traction devicesare shipped on a separate fiat car. All that is required for removing orreplacing the traction devices is the removal of a few bolts and nuts,the traction devices and main frame and elements of the drive of thetraction dc vices being engageable and d'isengageable other by arelatively lateral shifting movement. Laborious and difiicult assembly Iand disassembly operations are avoided.

Another important object of the invention residesin the provision of anexcavating ma- ,chine of this character and having these adeffective inoperation, and easy and comparatively inexpensive to manufacture.

Other objects and advantages reside in certain novel features of theconstruction, arrangement and combination of parts which will behereinafter more fully described and particularly pointed out in theappended ciainis, reference being had to the accom panying drawings,forming a part of this specification, and in which:

Figure 1 is a diagrammatic view in elevation showing how a completeexcavating machine is first brought into position with the main frame ofthe machine and the parts carried thereby properly overlying a fiat car;

Figure 2 is a view similar to Figure 1 but showing the traction devicesremoved'and the main frame lowered into position on the flat car;

Figure 3 is a view very similar to Figure 2 but showing the tractiondevices entirely removed;

Figure 4 shows the traction devices mounted on a flat car;

Figure 5 is a view partly in top plan and partly in horizontal sectionillustrating the main frame and the traction devices and the drivetherefor and showing how these parts are assembled and disassembled; andmoved as units to permit the main frame of t Figure 6 is a view inelevation of that side of the main frame from which the traction deviceshave been removed.

Referringto the drawings, the numeral 1 designates generally the mainframe of a ma chine which is supported, as will be hereinafter morefullydescribed, on traction devices 2 of the type having endless flexibletreads or self-laying tracks. A revolving platform 3 is supported on themain frame 1 for rotation in the usual manner and this revolvingplatform carries the boom, the power plant and the otherinstrumentalities of the machine which are well known and widely usedand are therefore not shown.

Referring now especially to Figures 5 and 6, it will be seen that themain frame 1 has on each of its sides two outwardly projecting lugs 5which may be cast integral or otherwise suitably connected to the bodyof the main frame. The outer face 5 of each lug 5 is machinedtoa fiatplane surfac'eand the under surface of the outer end portion of each lugis similarly machined to present a downwardly facing shoulder 6. In theassembly, the lugs 5 engage and are supported on brackets designatedgenerally at 7 and integral. with or otherwisefixedly connected totheframes 8 of the traction devices 2. Each bracket 7 has a machinedface 7 'adapted to fitflush up against the machined face 5' of its lug 5and the lower portion of each bracket 7 is formed with a machined seator shoulder .9 upon which the correspondingly formed shoulder 6 of-theassociated lug 5- rests. When the lugs 5 at either side of the mainframe and thefbrackets 7 of the associated traction devices are broughtinto proper assembled relation; bolt-holes 10, 11 and :12 on each lugare aiined with correspondingly positioned bolt holes 13, 14 and 15formed in the associatedbrackets 7 and adja-' cent portion of thetraction frame8. The boltholesll and 14 are recessed or countersunk asindicated at 1 1 and 14", respectively, to define a pocket for thereception of'a key or washer 16 so that the bolts and nuts 18 extendingthrough the bolt holes 10, 11,12, 13,

14 and 15 need only take the strain of holding the-parts assembled andare relieved of all shearing stressesQ In other words, thecoactingshoulders of the-lugs and brackets take the vertical load andthe keysl6-take the stresses set up by the-tendency ofthe trac'-- tion frames toshift lengthwise relative to the mainframe. r i i '3 Each traction'frame 8 has one end bifurcated as at; 20 to receive the adjlustablebearings 21 for a shaft 22 carrying idlesprocket wheels 23 which meshwith the pins 24 of the links'25 of the "endless fiexible'treadsf Theends-er. the shaft 22) project beyond the sprocket wheels 23 and arereceived in the openingsof eye-bolts 26, Nuts27- and 28 are. threaded;on the eye-bolt 26 and engage the opposite sidesof 'apertured bearingwings or abutments '29 cast integral with the traction frame 8 orotherwise isuitably fixed thereto and through-the openings of which-theshanks of; the eye-bolts extend. The-opposite endof each traction frame8 has a bearing for the reception of a drive shaft30 on which driving;sprockets 31 are keyed, the driving sprockets 31 coactingwith the pins24 of the links to positively drive the flexible treads. each shaft'adjacent the inner driving spocket 31, a driven gear wheel32 is fixedand enclosed in a gear casing 33. I Each shaft 30eXtends inwardly beyondits driven gear wheel 32 and gear casing, 33 and has its innerportionf34 adaptedto be j ournaled in a bearing- 35 provided in the'mainframe; A removable flock collar is provided for the inner end of eachshaft '34'and whendthe shaft34 is received in its bearing 35 in theopening 38 in its inner face to permit of the. passage into and out ofthe casing of a drive pinion 39. Each driving pinion 39 is positionedjust alongside ofthe adjacent outer side member of the-main frame 1 andis'designed to intermesh with the driven'gear 32 when the machine isassembled. These drive pinions' 39 are preferably fixed on the outer 7ends of sleeves 42 and the sleeves 42 are rotatably, mounted on atransverse drive shaft 431: driven from the'power plant of the ma chineby meansnof the usual gearing 4'1. Clutches 40 serve toclutch'the-sleeveshafts 42 to the driveshaft 43 when desired, 7 The endsof the drive shaft 43 project beyond the drive 'pinions- 39 and areadapted "to be rer ceived in flanged bearing openings 45 inathe gearcasing 33. Q I I v A machine so constructed and. organized may beconveniently disassembled and assembled for shipment in accordance withthe following novel method. The machine-is completely assembled attheplaceof its manufacture and may be run under its own power up asuitable ramp and onto a. fiat car F and supporting structure or framingS. built up alongside of the hat car,- as clearly shownin Figure 1; Themainframe-is then vjacked up; jacks J being positioned belowportions 50of the main frame. The traction devicesfare then removed, by: taking outthe bolts 18, ree

moving the set collars 36 and. shifting the traction devices laterallyaway from-themain frame. Such lateral. shifting of thetrac-V tiondevices disengages the gears 32 from their. driving pinions '39 andpulls the shafts 34 out of their bearings as well'as' disengagesthe-'coacting lugs 5and'brackets 7. The jacks J are then manipulated tolowerthe main frame down onto the flat car, as illuse trated in Figures2 and 3. The traction devices may be shippedseparately on a flat asshown in Figure-4 and usually the boom is also'mounted on the flat carwith thetrac tion devices. Assembly of the traction-deviceswith the mainframe may be carried out on the flat car by jacking up the main frame,placing the traction devices on suitable supporting structure S built upalongside of the flat car, shifting thejtractio'n devices later allytobring the shafts 34 into the'bearings 35,.the gears 32 and 39into mesh,and the brackets 7 'intoengagement with the lugs .5, and then assemblingand securing the bolts and nuts 18 and the set collars 36. Thetractio'ndevices are complete self-contained units carrying theadjustment for the i'dle'sprock- 'ets and the driven gearing for thedriving sprockets and are assembled and'disassembled as units,

The invention claimed is:

1. In a machine of the character described, a main frame havingoutwardly extending lugs at its sides, traction devices at the sides ofthe main frame and having traction frames provided with brackets adaptedto have supporting engagement with the lugs of the main frame, fasteningmeans for se curing the lugs and brackets engaged, said traction frameshaving their ends projecting beyondthe lugs and brackets and carryingdriving sprockets and idler sprockets, an endless flexible belt trainedabout said driving sprockets and idler sprockets of each traction frame,a shaft mounted on eachtraction frame and fixed to the driving sprocketsthereof, a driven gear fixed to each of said shafts, driving gears onthe main frame adapted to mesh with said driven gear, when the tractiondevices are assembled with the main frame, each of said shaftsprojecting inwardly beyond its driven gear, said main frame havingbearings adapted to receive said shafts andremovable set c01- .lars forsecuring said shafts against outward displacement from said bearings.

2. In a machine of the character described,

p a main frame having outwardly projecting lugs at its sides, eachhaving a flat onter face and a shoulder along itslower portion, and

traction devices at the sides of the main frame and each havinga frameprovided with brackets formed with seats or shoulders adapted to havesupporting relationwith the shoulders of the lugs, said brackets alsohaving'flat faces adapted to have flush engagement with the flate facesof the lugs,

, fastening means coacting with the lugs and with the main frame andbrackets for securing the lugs and brackets engaged.

3. In a machine of the character described, a-main frame havingoutwardly projecting lugs at its side, each having a flat outer face anda shoulder along its lower portion, and traction devices at the sides ofthe main frame and each having a frame provided with brackets formedwith seats or shoulders adapted to have supporting relation with theshoulders of the lugs, said brackets also having flat faces adapted tohave flush en gagement with the flat faces of the lugs, fastening meanscoacting with the lugs and with the main frame, brackets for securingthe lugs and brackets engaged, and keys interfitted with the lugs andbrackets for .pre-

venting endwise shifting of the traction devices relative to the mainframe.

4. In a machine of the character described a main frame, tractiondevices at the sides of the main frame, each traction device having atraction frame, interengaging means on the main frame and onintermediate portions of the traction frames providing for the supportof the main frame on the traction frames, releasable fastening means forsecuring the interengaging means on the main frame and traction framesagainst displacement and disengagement, said traction frames havingtheir ends projecting beyond said interengaging means, an endlessflexible belt extending around and mounted on each traction frame, ashaft rotatably mounted on each traction frame and having drivingconnection with the endless flexible belt thereof, a driven gear fixedto each of said shafts, driving gears on the main frame adapted to meshwith the driven gears and to be disengaged therefrom upon application orremoval of the traction frames to the main frame, each of said shaftsprojecting inwardly beyond its driven gear, said main frame havingbearings into and from which said shafts slide when the traction framesare assembled wi h or disassembled from the main frame.

5. In a machine of the character described a main frame, tractiondevices at the sides of the main frame, each traction device hav ing atraction frame, interengaging means on the main frame and onintermediate portions of the traction frames providing for the supportof the main frame on the traction frames, releasable fastening means forsecuring the interengaging means on the main frame and traction framesagainst displacement and disengagement, said traction frames havingtheir ends projecting beyond said interengaging means, an endless,flexible belt extending around and mounted on each traction frame, ashaft rotatably mounted on each traction frame and having drivingconnection with the endless flexible belt thereof, a driven gear fixedto each of said shafts, driving pinions on the main frame adapted tomesh with the driven gears and to be disengaged therefrom uponapplication or removal of the traction frames to, the main frame, eachof said shafts proj ecting inwardly beyond its driven gear, said mainframe having bearings into and from which said shafts slide when thetraction frames are assembled with or disassembled from the main frameand a gear casing carried by each of the traction devices and enclosingthe driven gear thereof, each of said gear casings having an openingpermitting of the passage therethrough of the driving pinion adapted tocoact with the driven gear enclosed therein.

In witness whereof, I hereto afiix my sig-

